Maddox MC891 Assembly instructions

Visit our website at: http://www.harborfreight.com
Email our technical support at: [email protected] 58593
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back
of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep
this manual and the receipt in a safe and dry place for future reference. 22b
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright©2022 by Harbor Freight Tools®. All rights reserved.
No portion of this manual or any artwork contained herein may be reproduced in
any shape or form without the express written consent of Harbor Freight Tools.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

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Specifications
Lubricant Type Industrial White Petroleum
Functions
Plug Tool
Probe Tool
Needle
Lubricant (Industrial White Petroleum)
Pliers
Foldable
Razor
Valve Core Tool
Valve Extender
Allen Key
Hex Valve Cap
Valve Core
Repair Cords
Valve Cap
Set Screw

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Important Safety Information
1. Wear ANSI-approved safety goggles
and heavy-duty work gloves during use.
2. Refer to tire repair regulations
before repairing tire.
3. Do not allow Lubricant (Industrial
White Petroleum) to contact skin.
4. Do not attempt to repair sidewall
damage with this kit.
5. Be aware of sharp tips.
6. Inspect before every use; do not use
if parts are loose or damaged.
7. This product is not a toy. Do not allow
children to play with or near this item.
8. Do not modify Tire Repair Kit to perform
tasks for which it was not designed.
9. Use only with accessories included
with the Tire Repair Kit.
10. Deflate tire before use. Keep tire’s valve
stem uncovered during use to allow
any remaining air to flow out of tire.
11. Keep work area clean and well lit.
12. Keep bystanders out of
the area during use.
13. Do not use when tired or when
under the influence of drugs,
medication or alcohol.
14. Maintain product labels and
nameplates. These carry
important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.

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Operation Instructions
Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the
beginning of this document including all text under subheadings therein
before set up or use of this product.
1. Locate obstruction or damage to tire.
2. Check applicable tire repair
regulations before repairing tire.
3. If tire is repairable, ensure obstruction
or damage to tire is easily accessible.
4. Remove Valve Cap.
5. Remove Valve Core.
6. Remove obstruction from tire with Pliers.
7. Insert Probe Tool into hole.
8. Move Probe Tool up and down
with a twisting motion.
9. Remove Probe Tool.
NOTICE: Do not allow
Lubricant to contact skin.
10. Insert tip of Plug Tool into Lubricant.
11. Install a Repair Cord into Plug Tool
until even on both sides.
12. Insert tip of Plug Tool into tire.

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13. Slowly insert Repair Cord
2/3 of the way in.
14. Press sliding portion of
Plug Tool against tire.
15. Pull handle up until Plug Tool
is removed from tire.
CAUTION! Wear heavy-duty work
gloves and cut away from body.
16. Cut Repair Cord with Foldable Razor
leaving 5mm of Repair Cord excess.
17. Install Valve Core.
18. Inflate tire to proper psi.
19. Install Valve Cap.
NOTICE: Additional steps or different
procedures may be needed to permanently
repair tires for use on public roads.

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Maintenance
TO PREVENT SERIOUS INJURY FROM TOOL FAILURE:
Do not use damaged equipment. If abnormal noise or vibration
occurs, have the problem corrected before further use.
Cleaning, Maintenance, and Lubrication
1. BEFORE EACH USE, inspect the
general condition of the tool. Check for:
• loose hardware
• misalignment or binding
of moving parts
• cracked or broken parts
• any other condition that may
affect its safe operation.
2. AFTER USE, wipe the tool
off with a clean cloth.
3. When storing, coat all parts with a
light oil to prevent rust, then store
them in the Carrying Case.

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Record Serial Number Here:
Note: If product has no serial number, record month and year of purchase instead.
Note: Some parts are listed and shown for illustration purposes only, and are not available
individually as replacement parts. Specify UPC 193175442000 when ordering parts.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND ASSEMBLY
DIAGRAM IN THIS DOCUMENT AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER
OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND TO THE
BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO THE PRODUCT, OR
THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE PRODUCT. IN FACT, THE
MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES THAT ALL REPAIRS AND PARTS
REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED TECHNICIANS,
AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING OUT OF
HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO,
OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.

Limited 90 Day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free from
defects in materials and workmanship for the period of 90 days from the date of purchase.
This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence
or accidents, repairs or alterations outside our facilities, criminal activity, improper installation,
normal wear and tear, or to lack of maintenance. We shall in no event be liable for death,
injuries to persons or property, or for incidental, contingent, special or consequential damages
arising from the use of our product. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation of exclusion may not apply to you.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with transportation
charges prepaid. Proof of purchase date and an explanation of the complaint must accompany
the merchandise. If our inspection verifies the defect, we will either repair or replace
the product at our election or we may elect to refund the purchase price if we cannot readily
and quickly provide you with a replacement. We will return repaired products at our expense,
but if we determine there is no defect, or that the defect resulted from causes not within
the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also
have other rights which vary from state to state.
26677 Agoura Road • Calabasas, CA 91302 • 1-888-866-5797